The United States Anti-Doping Agency revealed on Wednesday that seven-time Tour de France winner Lance Armstrong was engaged in the biggest doping conspiracy in recent sports history and added it would soon release details of its findings.

The organisation said it would submit more than 1,000 pages of supporting information, including the testimony of 11 of Armstrong’s former US Postal Service team-mates, to the International Cycling Union, which has 21 days to appeal.

In August, The 41-year-old chose not to pursue the case, prompting authorities to ban him from major cycling events for life.